CVE-2026-46059
Description
In the Linux kernel, the following vulnerability has been resolved: KVM: nSVM: Always use NextRIP as vmcb02's NextRIP after first L2 VMRUN For guests with NRIPS disabled, L1 does not provide NextRIP when running an L2 with an injected soft interrupt, instead it advances the current RIP before running it. KVM uses the current RIP as the NextRIP in vmcb02 to emulate a CPU without NRIPS. However, after L2 runs the first time, NextRIP will be updated by the CPU and/or KVM, and the current RIP is no longer the correct value to use in vmcb02. Hence, after save/restore, use the current RIP if and only if a nested run is pending, otherwise use NextRIP. Give soft_int_next_rip the same treatment, as it's the same logic, just for a narrower use case. [sean: give soft_int_next_rip the same treatment]
How to fix
- linux linux_kernel6.18.27, 7.0.4 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | 5.8 ≤ v < 6.18.27, 6.19 ≤ v < 7.0.4 | 6.18.27, 7.0.4 |
| microsoft azl3_kernel_6.6.143.1-1 | No range specified | — |
| microsoft azl3_kernel_6.6.150.1-1 | No range specified | — |
| microsoft azl3_kernel_6.6.152.1-1 | No range specified | — |
| microsoft azl3_kernel_6.6.157.1-1 | No range specified | — |
| microsoft azl3_kernel_6.6.139.1-1 | No range specified | — |
| microsoft azl3_kernel_6.6.141.1-1 | No range specified | — |
| microsoft azl3_kernel_6.6.144.1-1 | No range specified | — |
| microsoft azl3_kernel_6.6.145.2-1 | No range specified | — |
| microsoft azl3_kernel_6.6.159.1-1 | No range specified | — |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.